PT-2025-37875 · Linux+4 · Linux Kernel+4

Published 2023-01-01 · Updated 2026-03-14 · CVE-2023-53270

Positive Technologies (AI Summary)

CVSS v2.0

6.0

Medium

Base vector

AV:L/AC:H/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A flaw exists in the Linux kernel's ext4 filesystem implementation where the i disksize can exceed i size during partial write operations. This condition can trigger a warning and potentially lead to issues during direct I/O (DIO) operations, specifically within the ext4 dio write iter function. The issue arises from an incorrect update of the i disksize value before verifying the relationship with i size. The vulnerability is triggered during the generic perform write and ext4 da write end functions.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Buffer Overflow

Weakness Enumeration

CWE-119

CWE-120

Related Identifiers

ALSA-2025_16880

BDU:2026-06005

CVE-2023-53270

RHSA-2024:2394

RHSA-2024_2394

SUSE-SU-2025:03614-1

SUSE-SU-2025:03615-1

SUSE-SU-2025:03628-1

SUSE-SU-2025:3716-1

SUSE-SU-2025:3761-1

Affected Products

Astra Linux

Debian

Linux Kernel

Red Hat

Suse

References · 993

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53270.json · Exploit
• https://git.kernel.org/stable/c/18eb23891aeae3229baf8c7c23b76be3364e1967 · Patch
• https://git.kernel.org/stable/c/d30090eb546d993ea3f3023452540c476ea614a5 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2023-53270 · Security Note
• https://ubuntu.com/security/CVE-2023-53270 · Vendor Advisory
• https://git.kernel.org/stable/c/3ecea2fee14227712694c8b54ad99d471e61de92 · Patch
• https://bdu.fstec.ru/vul/2026-06005 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53270 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53270 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:03615-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-53270 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53270 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2023-53270 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-53270 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:03614-1 · Vendor Advisory